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    <script>
        function factorial(n) {
            var s = 1
            for (var i = 1; i <= n; i ++) {
                s *= i
            }
            return s
        }

        for(var i = 100; i < 1000; i ++) {
            var s = factorial(i % 10) + factorial(Math.floor(i / 100)) + factorial(Math.floor(i / 10) % 10)
            if (s == i) {
                console.log(i)
            }
        }
    </script>
</body>
</html>